drivers/gpu/drm/nouveau/nv04_dfp.c

   1 /*
   2  * Copyright 2003 NVIDIA, Corporation
   3  * Copyright 2006 Dave Airlie
   4  * Copyright 2007 Maarten Maathuis
   5  * Copyright 2007-2009 Stuart Bennett
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the next
  15  * paragraph) shall be included in all copies or substantial portions of the
  16  * Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  23  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  24  * DEALINGS IN THE SOFTWARE.
  25  */
  26
  27 #include "drmP.h"
  28 #include "drm_crtc_helper.h"
  29
  30 #include "nouveau_drv.h"
  31 #include "nouveau_encoder.h"
  32 #include "nouveau_connector.h"
  33 #include "nouveau_crtc.h"
  34 #include "nouveau_hw.h"
  35 #include "nvreg.h"
  36
  37 #include "i2c/sil164.h"
  38
  39 #define FP_TG_CONTROL_ON  (NV_PRAMDAC_FP_TG_CONTROL_DISPEN_POS |        \
  40                            NV_PRAMDAC_FP_TG_CONTROL_HSYNC_POS |         \
  41                            NV_PRAMDAC_FP_TG_CONTROL_VSYNC_POS)
  42 #define FP_TG_CONTROL_OFF (NV_PRAMDAC_FP_TG_CONTROL_DISPEN_DISABLE |    \
  43                            NV_PRAMDAC_FP_TG_CONTROL_HSYNC_DISABLE |     \
  44                            NV_PRAMDAC_FP_TG_CONTROL_VSYNC_DISABLE)
  45
  46 static inline bool is_fpc_off(uint32_t fpc)
  47 {
  48         return ((fpc & (FP_TG_CONTROL_ON | FP_TG_CONTROL_OFF)) ==
  49                         FP_TG_CONTROL_OFF);
  50 }
  51
  52 int nv04_dfp_get_bound_head(struct drm_device *dev, struct dcb_entry *dcbent)
  53 {
  54         /* special case of nv_read_tmds to find crtc associated with an output.
  55          * this does not give a correct answer for off-chip dvi, but there's no
  56          * use for such an answer anyway
  57          */
  58         int ramdac = (dcbent->or & OUTPUT_C) >> 2;
  59
  60         NVWriteRAMDAC(dev, ramdac, NV_PRAMDAC_FP_TMDS_CONTROL,
  61         NV_PRAMDAC_FP_TMDS_CONTROL_WRITE_DISABLE | 0x4);
  62         return ((NVReadRAMDAC(dev, ramdac, NV_PRAMDAC_FP_TMDS_DATA) & 0x8) >> 3) ^ ramdac;
  63 }
  64
  65 void nv04_dfp_bind_head(struct drm_device *dev, struct dcb_entry *dcbent,
  66                         int head, bool dl)
  67 {
  68         /* The BIOS scripts don't do this for us, sadly
  69          * Luckily we do know the values ;-)
  70          *
  71          * head < 0 indicates we wish to force a setting with the overrideval
  72          * (for VT restore etc.)
  73          */
  74
  75         int ramdac = (dcbent->or & OUTPUT_C) >> 2;
  76         uint8_t tmds04 = 0x80;
  77
  78         if (head != ramdac)
  79                 tmds04 = 0x88;
  80
  81         if (dcbent->type == OUTPUT_LVDS)
  82                 tmds04 |= 0x01;
  83
  84         nv_write_tmds(dev, dcbent->or, 0, 0x04, tmds04);
  85
  86         if (dl) /* dual link */
  87                 nv_write_tmds(dev, dcbent->or, 1, 0x04, tmds04 ^ 0x08);
  88 }
  89
  90 void nv04_dfp_disable(struct drm_device *dev, int head)
  91 {
  92         struct drm_nouveau_private *dev_priv = dev->dev_private;
  93         struct nv04_crtc_reg *crtcstate = dev_priv->mode_reg.crtc_reg;
  94
  95         if (NVReadRAMDAC(dev, head, NV_PRAMDAC_FP_TG_CONTROL) &
  96             FP_TG_CONTROL_ON) {
  97                 /* digital remnants must be cleaned before new crtc
  98                  * values programmed.  delay is time for the vga stuff
  99                  * to realise it's in control again
 100                  */
 101                 NVWriteRAMDAC(dev, head, NV_PRAMDAC_FP_TG_CONTROL,
 102                               FP_TG_CONTROL_OFF);
 103                 msleep(50);
 104         }
 105         /* don't inadvertently turn it on when state written later */
 106         crtcstate[head].fp_control = FP_TG_CONTROL_OFF;
 107         crtcstate[head].CRTC[NV_CIO_CRE_LCD__INDEX] &=
 108                 ~NV_CIO_CRE_LCD_ROUTE_MASK;
 109 }
 110
 111 void nv04_dfp_update_fp_control(struct drm_encoder *encoder, int mode)
 112 {
 113         struct drm_device *dev = encoder->dev;
 114         struct drm_nouveau_private *dev_priv = dev->dev_private;
 115         struct drm_crtc *crtc;
 116         struct nouveau_crtc *nv_crtc;
 117         uint32_t *fpc;
 118
 119         if (mode == DRM_MODE_DPMS_ON) {
 120                 nv_crtc = nouveau_crtc(encoder->crtc);
 121                 fpc = &dev_priv->mode_reg.crtc_reg[nv_crtc->index].fp_control;
 122
 123                 if (is_fpc_off(*fpc)) {
 124                         /* using saved value is ok, as (is_digital && dpms_on &&
 125                          * fp_control==OFF) is (at present) *only* true when
 126                          * fpc's most recent change was by below "off" code
 127                          */
 128                         *fpc = nv_crtc->dpms_saved_fp_control;
 129                 }
 130
 131                 nv_crtc->fp_users |= 1 << nouveau_encoder(encoder)->dcb->index;
 132                 NVWriteRAMDAC(dev, nv_crtc->index, NV_PRAMDAC_FP_TG_CONTROL, *fpc);
 133         } else {
 134                 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 135                         nv_crtc = nouveau_crtc(crtc);
 136                         fpc = &dev_priv->mode_reg.crtc_reg[nv_crtc->index].fp_control;
 137
 138                         nv_crtc->fp_users &= ~(1 << nouveau_encoder(encoder)->dcb->index);
 139                         if (!is_fpc_off(*fpc) && !nv_crtc->fp_users) {
 140                                 nv_crtc->dpms_saved_fp_control = *fpc;
 141                                 /* cut the FP output */
 142                                 *fpc &= ~FP_TG_CONTROL_ON;
 143                                 *fpc |= FP_TG_CONTROL_OFF;
 144                                 NVWriteRAMDAC(dev, nv_crtc->index,
 145                                               NV_PRAMDAC_FP_TG_CONTROL, *fpc);
 146                         }
 147                 }
 148         }
 149 }
 150
 151 static struct drm_encoder *get_tmds_slave(struct drm_encoder *encoder)
 152 {
 153         struct drm_device *dev = encoder->dev;
 154         struct dcb_entry *dcb = nouveau_encoder(encoder)->dcb;
 155         struct drm_encoder *slave;
 156
 157         if (dcb->type != OUTPUT_TMDS || dcb->location == DCB_LOC_ON_CHIP)
 158                 return NULL;
 159
 160         /* Some BIOSes (e.g. the one in a Quadro FX1000) report several
 161          * TMDS transmitters at the same I2C address, in the same I2C
 162          * bus. This can still work because in that case one of them is
 163          * always hard-wired to a reasonable configuration using straps,
 164          * and the other one needs to be programmed.
 165          *
 166          * I don't think there's a way to know which is which, even the
 167          * blob programs the one exposed via I2C for *both* heads, so
 168          * let's do the same.
 169          */
 170         list_for_each_entry(slave, &dev->mode_config.encoder_list, head) {
 171                 struct dcb_entry *slave_dcb = nouveau_encoder(slave)->dcb;
 172
 173                 if (slave_dcb->type == OUTPUT_TMDS && get_slave_funcs(slave) &&
 174                     slave_dcb->tmdsconf.slave_addr == dcb->tmdsconf.slave_addr)
 175                         return slave;
 176         }
 177
 178         return NULL;
 179 }
 180
 181 static bool nv04_dfp_mode_fixup(struct drm_encoder *encoder,
 182                                 struct drm_display_mode *mode,
 183                                 struct drm_display_mode *adjusted_mode)
 184 {
 185         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 186         struct nouveau_connector *nv_connector = nouveau_encoder_connector_get(nv_encoder);
 187
 188         if (!nv_connector->native_mode ||
 189             nv_connector->scaling_mode == DRM_MODE_SCALE_NONE ||
 190             mode->hdisplay > nv_connector->native_mode->hdisplay ||
 191             mode->vdisplay > nv_connector->native_mode->vdisplay) {
 192                 nv_encoder->mode = *adjusted_mode;
 193
 194         } else {
 195                 nv_encoder->mode = *nv_connector->native_mode;
 196                 adjusted_mode->clock = nv_connector->native_mode->clock;
 197         }
 198
 199         return true;
 200 }
 201
 202 static void nv04_dfp_prepare_sel_clk(struct drm_device *dev,
 203                                      struct nouveau_encoder *nv_encoder, int head)
 204 {
 205         struct drm_nouveau_private *dev_priv = dev->dev_private;
 206         struct nv04_mode_state *state = &dev_priv->mode_reg;
 207         uint32_t bits1618 = nv_encoder->dcb->or & OUTPUT_A ? 0x10000 : 0x40000;
 208
 209         if (nv_encoder->dcb->location != DCB_LOC_ON_CHIP)
 210                 return;
 211
 212         /* SEL_CLK is only used on the primary ramdac
 213          * It toggles spread spectrum PLL output and sets the bindings of PLLs
 214          * to heads on digital outputs
 215          */
 216         if (head)
 217                 state->sel_clk |= bits1618;
 218         else
 219                 state->sel_clk &= ~bits1618;
 220
 221         /* nv30:
 222          *      bit 0           NVClk spread spectrum on/off
 223          *      bit 2           MemClk spread spectrum on/off
 224          *      bit 4           PixClk1 spread spectrum on/off toggle
 225          *      bit 6           PixClk2 spread spectrum on/off toggle
 226          *
 227          * nv40 (observations from bios behaviour and mmio traces):
 228          *      bits 4&6        as for nv30
 229          *      bits 5&7        head dependent as for bits 4&6, but do not appear with 4&6;
 230          *                      maybe a different spread mode
 231          *      bits 8&10       seen on dual-link dvi outputs, purpose unknown (set by POST scripts)
 232          *      The logic behind turning spread spectrum on/off in the first place,
 233          *      and which bit-pair to use, is unclear on nv40 (for earlier cards, the fp table
 234          *      entry has the necessary info)
 235          */
 236         if (nv_encoder->dcb->type == OUTPUT_LVDS && dev_priv->saved_reg.sel_clk & 0xf0) {
 237                 int shift = (dev_priv->saved_reg.sel_clk & 0x50) ? 0 : 1;
 238
 239                 state->sel_clk &= ~0xf0;
 240                 state->sel_clk |= (head ? 0x40 : 0x10) << shift;
 241         }
 242 }
 243
 244 static void nv04_dfp_prepare(struct drm_encoder *encoder)
 245 {
 246         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 247         struct drm_encoder_helper_funcs *helper = encoder->helper_private;
 248         struct drm_device *dev = encoder->dev;
 249         struct drm_nouveau_private *dev_priv = dev->dev_private;
 250         int head = nouveau_crtc(encoder->crtc)->index;
 251         struct nv04_crtc_reg *crtcstate = dev_priv->mode_reg.crtc_reg;
 252         uint8_t *cr_lcd = &crtcstate[head].CRTC[NV_CIO_CRE_LCD__INDEX];
 253         uint8_t *cr_lcd_oth = &crtcstate[head ^ 1].CRTC[NV_CIO_CRE_LCD__INDEX];
 254
 255         helper->dpms(encoder, DRM_MODE_DPMS_OFF);
 256
 257         nv04_dfp_prepare_sel_clk(dev, nv_encoder, head);
 258
 259         *cr_lcd = (*cr_lcd & ~NV_CIO_CRE_LCD_ROUTE_MASK) | 0x3;
 260
 261         if (nv_two_heads(dev)) {
 262                 if (nv_encoder->dcb->location == DCB_LOC_ON_CHIP)
 263                         *cr_lcd |= head ? 0x0 : 0x8;
 264                 else {
 265                         *cr_lcd |= (nv_encoder->dcb->or << 4) & 0x30;
 266                         if (nv_encoder->dcb->type == OUTPUT_LVDS)
 267                                 *cr_lcd |= 0x30;
 268                         if ((*cr_lcd & 0x30) == (*cr_lcd_oth & 0x30)) {
 269                                 /* avoid being connected to both crtcs */
 270                                 *cr_lcd_oth &= ~0x30;
 271                                 NVWriteVgaCrtc(dev, head ^ 1,
 272                                                NV_CIO_CRE_LCD__INDEX,
 273                                                *cr_lcd_oth);
 274                         }
 275                 }
 276         }
 277 }
 278
 279
 280 static void nv04_dfp_mode_set(struct drm_encoder *encoder,
 281                               struct drm_display_mode *mode,
 282                               struct drm_display_mode *adjusted_mode)
 283 {
 284         struct drm_device *dev = encoder->dev;
 285         struct drm_nouveau_private *dev_priv = dev->dev_private;
 286         struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
 287         struct nv04_crtc_reg *regp = &dev_priv->mode_reg.crtc_reg[nv_crtc->index];
 288         struct nv04_crtc_reg *savep = &dev_priv->saved_reg.crtc_reg[nv_crtc->index];
 289         struct nouveau_connector *nv_connector = nouveau_crtc_connector_get(nv_crtc);
 290         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 291         struct drm_display_mode *output_mode = &nv_encoder->mode;
 292         uint32_t mode_ratio, panel_ratio;
 293
 294         NV_DEBUG_KMS(dev, "Output mode on CRTC %d:\n", nv_crtc->index);
 295         drm_mode_debug_printmodeline(output_mode);
 296
 297         /* Initialize the FP registers in this CRTC. */
 298         regp->fp_horiz_regs[FP_DISPLAY_END] = output_mode->hdisplay - 1;
 299         regp->fp_horiz_regs[FP_TOTAL] = output_mode->htotal - 1;
 300         if (!nv_gf4_disp_arch(dev) ||
 301             (output_mode->hsync_start - output_mode->hdisplay) >=
 302                                         dev_priv->vbios.digital_min_front_porch)
 303                 regp->fp_horiz_regs[FP_CRTC] = output_mode->hdisplay;
 304         else
 305                 regp->fp_horiz_regs[FP_CRTC] = output_mode->hsync_start - dev_priv->vbios.digital_min_front_porch - 1;
 306         regp->fp_horiz_regs[FP_SYNC_START] = output_mode->hsync_start - 1;
 307         regp->fp_horiz_regs[FP_SYNC_END] = output_mode->hsync_end - 1;
 308         regp->fp_horiz_regs[FP_VALID_START] = output_mode->hskew;
 309         regp->fp_horiz_regs[FP_VALID_END] = output_mode->hdisplay - 1;
 310
 311         regp->fp_vert_regs[FP_DISPLAY_END] = output_mode->vdisplay - 1;
 312         regp->fp_vert_regs[FP_TOTAL] = output_mode->vtotal - 1;
 313         regp->fp_vert_regs[FP_CRTC] = output_mode->vtotal - 5 - 1;
 314         regp->fp_vert_regs[FP_SYNC_START] = output_mode->vsync_start - 1;
 315         regp->fp_vert_regs[FP_SYNC_END] = output_mode->vsync_end - 1;
 316         regp->fp_vert_regs[FP_VALID_START] = 0;
 317         regp->fp_vert_regs[FP_VALID_END] = output_mode->vdisplay - 1;
 318
 319         /* bit26: a bit seen on some g7x, no as yet discernable purpose */
 320         regp->fp_control = NV_PRAMDAC_FP_TG_CONTROL_DISPEN_POS |
 321                            (savep->fp_control & (1 << 26 | NV_PRAMDAC_FP_TG_CONTROL_READ_PROG));
 322         /* Deal with vsync/hsync polarity */
 323         /* LVDS screens do set this, but modes with +ve syncs are very rare */
 324         if (output_mode->flags & DRM_MODE_FLAG_PVSYNC)
 325                 regp->fp_control |= NV_PRAMDAC_FP_TG_CONTROL_VSYNC_POS;
 326         if (output_mode->flags & DRM_MODE_FLAG_PHSYNC)
 327                 regp->fp_control |= NV_PRAMDAC_FP_TG_CONTROL_HSYNC_POS;
 328         /* panel scaling first, as native would get set otherwise */
 329         if (nv_connector->scaling_mode == DRM_MODE_SCALE_NONE ||
 330             nv_connector->scaling_mode == DRM_MODE_SCALE_CENTER)        /* panel handles it */
 331                 regp->fp_control |= NV_PRAMDAC_FP_TG_CONTROL_MODE_CENTER;
 332         else if (adjusted_mode->hdisplay == output_mode->hdisplay &&
 333                  adjusted_mode->vdisplay == output_mode->vdisplay) /* native mode */
 334                 regp->fp_control |= NV_PRAMDAC_FP_TG_CONTROL_MODE_NATIVE;
 335         else /* gpu needs to scale */
 336                 regp->fp_control |= NV_PRAMDAC_FP_TG_CONTROL_MODE_SCALE;
 337         if (nvReadEXTDEV(dev, NV_PEXTDEV_BOOT_0) & NV_PEXTDEV_BOOT_0_STRAP_FP_IFACE_12BIT)
 338                 regp->fp_control |= NV_PRAMDAC_FP_TG_CONTROL_WIDTH_12;
 339         if (nv_encoder->dcb->location != DCB_LOC_ON_CHIP &&
 340             output_mode->clock > 165000)
 341                 regp->fp_control |= (2 << 24);
 342         if (nv_encoder->dcb->type == OUTPUT_LVDS) {
 343                 bool duallink, dummy;
 344
 345                 nouveau_bios_parse_lvds_table(dev, nv_connector->native_mode->
 346                                               clock, &duallink, &dummy);
 347                 if (duallink)
 348                         regp->fp_control |= (8 << 28);
 349         } else
 350         if (output_mode->clock > 165000)
 351                 regp->fp_control |= (8 << 28);
 352
 353         regp->fp_debug_0 = NV_PRAMDAC_FP_DEBUG_0_YWEIGHT_ROUND |
 354                            NV_PRAMDAC_FP_DEBUG_0_XWEIGHT_ROUND |
 355                            NV_PRAMDAC_FP_DEBUG_0_YINTERP_BILINEAR |
 356                            NV_PRAMDAC_FP_DEBUG_0_XINTERP_BILINEAR |
 357                            NV_RAMDAC_FP_DEBUG_0_TMDS_ENABLED |
 358                            NV_PRAMDAC_FP_DEBUG_0_YSCALE_ENABLE |
 359                            NV_PRAMDAC_FP_DEBUG_0_XSCALE_ENABLE;
 360
 361         /* We want automatic scaling */
 362         regp->fp_debug_1 = 0;
 363         /* This can override HTOTAL and VTOTAL */
 364         regp->fp_debug_2 = 0;
 365
 366         /* Use 20.12 fixed point format to avoid floats */
 367         mode_ratio = (1 << 12) * adjusted_mode->hdisplay / adjusted_mode->vdisplay;
 368         panel_ratio = (1 << 12) * output_mode->hdisplay / output_mode->vdisplay;
 369         /* if ratios are equal, SCALE_ASPECT will automatically (and correctly)
 370          * get treated the same as SCALE_FULLSCREEN */
 371         if (nv_connector->scaling_mode == DRM_MODE_SCALE_ASPECT &&
 372             mode_ratio != panel_ratio) {
 373                 uint32_t diff, scale;
 374                 bool divide_by_2 = nv_gf4_disp_arch(dev);
 375
 376                 if (mode_ratio < panel_ratio) {
 377                         /* vertical needs to expand to glass size (automatic)
 378                          * horizontal needs to be scaled at vertical scale factor
 379                          * to maintain aspect */
 380
 381                         scale = (1 << 12) * adjusted_mode->vdisplay / output_mode->vdisplay;
 382                         regp->fp_debug_1 = NV_PRAMDAC_FP_DEBUG_1_XSCALE_TESTMODE_ENABLE |
 383                                            XLATE(scale, divide_by_2, NV_PRAMDAC_FP_DEBUG_1_XSCALE_VALUE);
 384
 385                         /* restrict area of screen used, horizontally */
 386                         diff = output_mode->hdisplay -
 387                                output_mode->vdisplay * mode_ratio / (1 << 12);
 388                         regp->fp_horiz_regs[FP_VALID_START] += diff / 2;
 389                         regp->fp_horiz_regs[FP_VALID_END] -= diff / 2;
 390                 }
 391
 392                 if (mode_ratio > panel_ratio) {
 393                         /* horizontal needs to expand to glass size (automatic)
 394                          * vertical needs to be scaled at horizontal scale factor
 395                          * to maintain aspect */
 396
 397                         scale = (1 << 12) * adjusted_mode->hdisplay / output_mode->hdisplay;
 398                         regp->fp_debug_1 = NV_PRAMDAC_FP_DEBUG_1_YSCALE_TESTMODE_ENABLE |
 399                                            XLATE(scale, divide_by_2, NV_PRAMDAC_FP_DEBUG_1_YSCALE_VALUE);
 400
 401                         /* restrict area of screen used, vertically */
 402                         diff = output_mode->vdisplay -
 403                                (1 << 12) * output_mode->hdisplay / mode_ratio;
 404                         regp->fp_vert_regs[FP_VALID_START] += diff / 2;
 405                         regp->fp_vert_regs[FP_VALID_END] -= diff / 2;
 406                 }
 407         }
 408
 409         /* Output property. */
 410         if (nv_connector->use_dithering) {
 411                 if (dev_priv->chipset == 0x11)
 412                         regp->dither = savep->dither | 0x00010000;
 413                 else {
 414                         int i;
 415                         regp->dither = savep->dither | 0x00000001;
 416                         for (i = 0; i < 3; i++) {
 417                                 regp->dither_regs[i] = 0xe4e4e4e4;
 418                                 regp->dither_regs[i + 3] = 0x44444444;
 419                         }
 420                 }
 421         } else {
 422                 if (dev_priv->chipset != 0x11) {
 423                         /* reset them */
 424                         int i;
 425                         for (i = 0; i < 3; i++) {
 426                                 regp->dither_regs[i] = savep->dither_regs[i];
 427                                 regp->dither_regs[i + 3] = savep->dither_regs[i + 3];
 428                         }
 429                 }
 430                 regp->dither = savep->dither;
 431         }
 432
 433         regp->fp_margin_color = 0;
 434 }
 435
 436 static void nv04_dfp_commit(struct drm_encoder *encoder)
 437 {
 438         struct drm_device *dev = encoder->dev;
 439         struct drm_nouveau_private *dev_priv = dev->dev_private;
 440         struct drm_encoder_helper_funcs *helper = encoder->helper_private;
 441         struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
 442         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 443         struct dcb_entry *dcbe = nv_encoder->dcb;
 444         int head = nouveau_crtc(encoder->crtc)->index;
 445         struct drm_encoder *slave_encoder;
 446
 447         if (dcbe->type == OUTPUT_TMDS)
 448                 run_tmds_table(dev, dcbe, head, nv_encoder->mode.clock);
 449         else if (dcbe->type == OUTPUT_LVDS)
 450                 call_lvds_script(dev, dcbe, head, LVDS_RESET, nv_encoder->mode.clock);
 451
 452         /* update fp_control state for any changes made by scripts,
 453          * so correct value is written at DPMS on */
 454         dev_priv->mode_reg.crtc_reg[head].fp_control =
 455                 NVReadRAMDAC(dev, head, NV_PRAMDAC_FP_TG_CONTROL);
 456
 457         /* This could use refinement for flatpanels, but it should work this way */
 458         if (dev_priv->chipset < 0x44)
 459                 NVWriteRAMDAC(dev, 0, NV_PRAMDAC_TEST_CONTROL + nv04_dac_output_offset(encoder), 0xf0000000);
 460         else
 461                 NVWriteRAMDAC(dev, 0, NV_PRAMDAC_TEST_CONTROL + nv04_dac_output_offset(encoder), 0x00100000);
 462
 463         /* Init external transmitters */
 464         slave_encoder = get_tmds_slave(encoder);
 465         if (slave_encoder)
 466                 get_slave_funcs(slave_encoder)->mode_set(
 467                         slave_encoder, &nv_encoder->mode, &nv_encoder->mode);
 468
 469         helper->dpms(encoder, DRM_MODE_DPMS_ON);
 470
 471         NV_INFO(dev, "Output %s is running on CRTC %d using output %c\n",
 472                 drm_get_connector_name(&nouveau_encoder_connector_get(nv_encoder)->base),
 473                 nv_crtc->index, '@' + ffs(nv_encoder->dcb->or));
 474 }
 475
 476 static void nv04_dfp_update_backlight(struct drm_encoder *encoder, int mode)
 477 {
 478 #ifdef __powerpc__
 479         struct drm_device *dev = encoder->dev;
 480
 481         /* BIOS scripts usually take care of the backlight, thanks
 482          * Apple for your consistency.
 483          */
 484         if (dev->pci_device == 0x0179 || dev->pci_device == 0x0189 ||
 485             dev->pci_device == 0x0329) {
 486                 if (mode == DRM_MODE_DPMS_ON) {
 487                         nv_mask(dev, NV_PBUS_DEBUG_DUALHEAD_CTL, 0, 1 << 31);
 488                         nv_mask(dev, NV_PCRTC_GPIO_EXT, 3, 1);
 489                 } else {
 490                         nv_mask(dev, NV_PBUS_DEBUG_DUALHEAD_CTL, 1 << 31, 0);
 491                         nv_mask(dev, NV_PCRTC_GPIO_EXT, 3, 0);
 492                 }
 493         }
 494 #endif
 495 }
 496
 497 static inline bool is_powersaving_dpms(int mode)
 498 {
 499         return (mode != DRM_MODE_DPMS_ON);
 500 }
 501
 502 static void nv04_lvds_dpms(struct drm_encoder *encoder, int mode)
 503 {
 504         struct drm_device *dev = encoder->dev;
 505         struct drm_crtc *crtc = encoder->crtc;
 506         struct drm_nouveau_private *dev_priv = dev->dev_private;
 507         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 508         bool was_powersaving = is_powersaving_dpms(nv_encoder->last_dpms);
 509
 510         if (nv_encoder->last_dpms == mode)
 511                 return;
 512         nv_encoder->last_dpms = mode;
 513
 514         NV_INFO(dev, "Setting dpms mode %d on lvds encoder (output %d)\n",
 515                      mode, nv_encoder->dcb->index);
 516
 517         if (was_powersaving && is_powersaving_dpms(mode))
 518                 return;
 519
 520         if (nv_encoder->dcb->lvdsconf.use_power_scripts) {
 521                 struct nouveau_connector *nv_connector = nouveau_encoder_connector_get(nv_encoder);
 522
 523                 /* when removing an output, crtc may not be set, but PANEL_OFF
 524                  * must still be run
 525                  */
 526                 int head = crtc ? nouveau_crtc(crtc)->index :
 527                            nv04_dfp_get_bound_head(dev, nv_encoder->dcb);
 528
 529                 if (mode == DRM_MODE_DPMS_ON) {
 530                         if (!nv_connector->native_mode) {
 531                                 NV_ERROR(dev, "Not turning on LVDS without native mode\n");
 532                                 return;
 533                         }
 534                         call_lvds_script(dev, nv_encoder->dcb, head,
 535                                          LVDS_PANEL_ON, nv_connector->native_mode->clock);
 536                 } else
 537                         /* pxclk of 0 is fine for PANEL_OFF, and for a
 538                          * disconnected LVDS encoder there is no native_mode
 539                          */
 540                         call_lvds_script(dev, nv_encoder->dcb, head,
 541                                          LVDS_PANEL_OFF, 0);
 542         }
 543
 544         nv04_dfp_update_backlight(encoder, mode);
 545         nv04_dfp_update_fp_control(encoder, mode);
 546
 547         if (mode == DRM_MODE_DPMS_ON)
 548                 nv04_dfp_prepare_sel_clk(dev, nv_encoder, nouveau_crtc(crtc)->index);
 549         else {
 550                 dev_priv->mode_reg.sel_clk = NVReadRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK);
 551                 dev_priv->mode_reg.sel_clk &= ~0xf0;
 552         }
 553         NVWriteRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK, dev_priv->mode_reg.sel_clk);
 554 }
 555
 556 static void nv04_tmds_dpms(struct drm_encoder *encoder, int mode)
 557 {
 558         struct drm_device *dev = encoder->dev;
 559         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 560
 561         if (nv_encoder->last_dpms == mode)
 562                 return;
 563         nv_encoder->last_dpms = mode;
 564
 565         NV_INFO(dev, "Setting dpms mode %d on tmds encoder (output %d)\n",
 566                      mode, nv_encoder->dcb->index);
 567
 568         nv04_dfp_update_backlight(encoder, mode);
 569         nv04_dfp_update_fp_control(encoder, mode);
 570 }
 571
 572 static void nv04_dfp_save(struct drm_encoder *encoder)
 573 {
 574         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 575         struct drm_device *dev = encoder->dev;
 576
 577         if (nv_two_heads(dev))
 578                 nv_encoder->restore.head =
 579                         nv04_dfp_get_bound_head(dev, nv_encoder->dcb);
 580 }
 581
 582 static void nv04_dfp_restore(struct drm_encoder *encoder)
 583 {
 584         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 585         struct drm_device *dev = encoder->dev;
 586         struct drm_nouveau_private *dev_priv = dev->dev_private;
 587         int head = nv_encoder->restore.head;
 588
 589         if (nv_encoder->dcb->type == OUTPUT_LVDS) {
 590                 struct drm_display_mode *native_mode = nouveau_encoder_connector_get(nv_encoder)->native_mode;
 591                 if (native_mode)
 592                         call_lvds_script(dev, nv_encoder->dcb, head, LVDS_PANEL_ON,
 593                                          native_mode->clock);
 594                 else
 595                         NV_ERROR(dev, "Not restoring LVDS without native mode\n");
 596
 597         } else if (nv_encoder->dcb->type == OUTPUT_TMDS) {
 598                 int clock = nouveau_hw_pllvals_to_clk
 599                                         (&dev_priv->saved_reg.crtc_reg[head].pllvals);
 600
 601                 run_tmds_table(dev, nv_encoder->dcb, head, clock);
 602         }
 603
 604         nv_encoder->last_dpms = NV_DPMS_CLEARED;
 605 }
 606
 607 static void nv04_dfp_destroy(struct drm_encoder *encoder)
 608 {
 609         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 610
 611         NV_DEBUG_KMS(encoder->dev, "\n");
 612
 613         if (get_slave_funcs(encoder))
 614                 get_slave_funcs(encoder)->destroy(encoder);
 615
 616         drm_encoder_cleanup(encoder);
 617         kfree(nv_encoder);
 618 }
 619
 620 static void nv04_tmds_slave_init(struct drm_encoder *encoder)
 621 {
 622         struct drm_device *dev = encoder->dev;
 623         struct dcb_entry *dcb = nouveau_encoder(encoder)->dcb;
 624         struct nouveau_i2c_chan *i2c = nouveau_i2c_find(dev, 2);
 625         struct i2c_board_info info[] = {
 626                 {
 627                         .type = "sil164",
 628                         .addr = (dcb->tmdsconf.slave_addr == 0x7 ? 0x3a : 0x38),
 629                         .platform_data = &(struct sil164_encoder_params) {
 630                                 SIL164_INPUT_EDGE_RISING
 631                         }
 632                 },
 633                 { }
 634         };
 635         int type;
 636
 637         if (!nv_gf4_disp_arch(dev) || !i2c ||
 638             get_tmds_slave(encoder))
 639                 return;
 640
 641         type = nouveau_i2c_identify(dev, "TMDS transmitter", info, NULL, 2);
 642         if (type < 0)
 643                 return;
 644
 645         drm_i2c_encoder_init(dev, to_encoder_slave(encoder),
 646                              &i2c->adapter, &info[type]);
 647 }
 648
 649 static const struct drm_encoder_helper_funcs nv04_lvds_helper_funcs = {
 650         .dpms = nv04_lvds_dpms,
 651         .save = nv04_dfp_save,
 652         .restore = nv04_dfp_restore,
 653         .mode_fixup = nv04_dfp_mode_fixup,
 654         .prepare = nv04_dfp_prepare,
 655         .commit = nv04_dfp_commit,
 656         .mode_set = nv04_dfp_mode_set,
 657         .detect = NULL,
 658 };
 659
 660 static const struct drm_encoder_helper_funcs nv04_tmds_helper_funcs = {
 661         .dpms = nv04_tmds_dpms,
 662         .save = nv04_dfp_save,
 663         .restore = nv04_dfp_restore,
 664         .mode_fixup = nv04_dfp_mode_fixup,
 665         .prepare = nv04_dfp_prepare,
 666         .commit = nv04_dfp_commit,
 667         .mode_set = nv04_dfp_mode_set,
 668         .detect = NULL,
 669 };
 670
 671 static const struct drm_encoder_funcs nv04_dfp_funcs = {
 672         .destroy = nv04_dfp_destroy,
 673 };
 674
 675 int
 676 nv04_dfp_create(struct drm_connector *connector, struct dcb_entry *entry)
 677 {
 678         const struct drm_encoder_helper_funcs *helper;
 679         struct nouveau_encoder *nv_encoder = NULL;
 680         struct drm_encoder *encoder;
 681         int type;
 682
 683         switch (entry->type) {
 684         case OUTPUT_TMDS:
 685                 type = DRM_MODE_ENCODER_TMDS;
 686                 helper = &nv04_tmds_helper_funcs;
 687                 break;
 688         case OUTPUT_LVDS:
 689                 type = DRM_MODE_ENCODER_LVDS;
 690                 helper = &nv04_lvds_helper_funcs;
 691                 break;
 692         default:
 693                 return -EINVAL;
 694         }
 695
 696         nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
 697         if (!nv_encoder)
 698                 return -ENOMEM;
 699
 700         encoder = to_drm_encoder(nv_encoder);
 701
 702         nv_encoder->dcb = entry;
 703         nv_encoder->or = ffs(entry->or) - 1;
 704
 705         drm_encoder_init(connector->dev, encoder, &nv04_dfp_funcs, type);
 706         drm_encoder_helper_add(encoder, helper);
 707
 708         encoder->possible_crtcs = entry->heads;
 709         encoder->possible_clones = 0;
 710
 711         if (entry->type == OUTPUT_TMDS &&
 712             entry->location != DCB_LOC_ON_CHIP)
 713                 nv04_tmds_slave_init(encoder);
 714
 715         drm_mode_connector_attach_encoder(connector, encoder);
 716         return 0;
 717 }